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Add timing tests for AES CBC encryption and decryption.

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This commit is contained in:
Stephen Heumann 2017-07-02 15:56:22 -05:00
parent c8b0fb904b
commit 6532a3abc4
1 changed files with 54 additions and 16 deletions
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70
aescbctest.c
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@ -1,5 +1,9 @@
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <Memory.h>
#include <MiscTool.h>
#include <orca.h>
#include "aes.h"
unsigned char iv[16] = {
@ -39,6 +43,8 @@ unsigned char plaintext[64] = {
unsigned char output[64];
unsigned char output2[64];
#define BUFSIZE 64000
static void printhex(char *str, unsigned char *buf, unsigned int count) {
unsigned int i;
@ -53,37 +59,69 @@ static void printhex(char *str, unsigned char *buf, unsigned int count) {
}
int main(void) {
struct aes_context context;
struct aes_context **context_hndl;
struct aes_context *context;
unsigned char *inbuf, *outbuf;
unsigned long tick_count;
long double bytes_per_sec;
context_hndl = (struct aes_context **)NewHandle(sizeof(struct aes_context),
userid(), attrFixed|attrPage|attrBank|attrNoCross, 0x000000);
if (toolerror())
return 0;
context = *context_hndl;
memcpy(context.key, key128, 16);
aes128_expandkey(&context);
memcpy(context->key, key128, 16);
aes128_expandkey(context);
memcpy(context.data, iv, 16);
aes_cbc_encrypt(&context, plaintext, output, 4);
memcpy(context->data, iv, 16);
aes_cbc_encrypt(context, plaintext, output, 4);
printhex("AES-128 ciphertext:", output, 64);
aes_cbc_decrypt(&context, output, output2, 4, iv);
aes_cbc_decrypt(context, output, output2, 4, iv);
printhex("Decrypted plaintext:", output2, 64);
memcpy(context.key, key192, 24);
aes192_expandkey(&context);
memcpy(context->key, key192, 24);
aes192_expandkey(context);
memcpy(context.data, iv, 16);
aes_cbc_encrypt(&context, plaintext, output, 4);
memcpy(context->data, iv, 16);
aes_cbc_encrypt(context, plaintext, output, 4);
printhex("AES-192 ciphertext:", output, 64);
aes_cbc_decrypt(&context, output, output2, 4, iv);
aes_cbc_decrypt(context, output, output2, 4, iv);
printhex("Decrypted plaintext:", output2, 64);
memcpy(context.key, key256, 32);
aes256_expandkey(&context);
memcpy(context->key, key256, 32);
aes256_expandkey(context);
memcpy(context.data, iv, 16);
aes_cbc_encrypt(&context, plaintext, output, 4);
memcpy(context->data, iv, 16);
aes_cbc_encrypt(context, plaintext, output, 4);
printhex("AES-256 ciphertext:", output, 64);
aes_cbc_decrypt(&context, output, output2, 4, iv);
aes_cbc_decrypt(context, output, output2, 4, iv);
printhex("Decrypted plaintext:", output2, 64);
/* Timing tests */
inbuf = calloc(BUFSIZE, 1);
outbuf = malloc(BUFSIZE);
if (inbuf == NULL || outbuf == NULL)
return -1;
memcpy(context->key, key128, 16);
aes128_expandkey(context);
memcpy(context->data, iv, 16);
tick_count = GetTick();
aes_cbc_encrypt(context, inbuf, outbuf, BUFSIZE / 16);
tick_count = GetTick() - tick_count;
bytes_per_sec = (long double)BUFSIZE * 60 / tick_count;
printf("AES-128 CBC encryption: %lf bytes/sec\n", bytes_per_sec);
tick_count = GetTick();
aes_cbc_decrypt(context, inbuf, outbuf, BUFSIZE / 16, iv);
tick_count = GetTick() - tick_count;
bytes_per_sec = (long double)BUFSIZE * 60 / tick_count;
printf("AES-128 CBC decryption: %lf bytes/sec\n", bytes_per_sec);
}